4.5. Multiplication in GF(2^4): Compute A(x)B(x) mod P(x) in GF(2^4) using the irreducible polynomial P(x) = x^4 +x+1. What is the influence of the choice of the reduction polynomial on the computation? 1. A(x) = x^2 +1, B(x) = x^3 +x^2 +1 2. A(x) = x^2 +1, B(x) = x+1